Overview

Homework Total length ~ [100-120min]

We should discuss moving the session time, as Maghrib is right in the middle of the start. I can't push the session time to accommodate starting next week
Unit test Jan 21st, both momentum and energy

  1. Watch these videos
    - How to solve linear systems of equations
    Openstax
    - Chapter 8 AP Problems :30-44 even
    - Chapter 7 AP Problems: 26-40 even

Notes

Going over openstax Chapter 8 problem 30
Theorem (Equations for Elastic Collision ).

Given that , an initial momentum of , initial kinetic energy of , and velocities of the solution to the following system of equations is represents the velocities. If there is no solution, the system cannot be elastic

These also work in 2 dimensions

Exercise (Mass A is five times more massive than mass B. Mass A is initially moving 10 m/s in the +x-direction. Mass B is initially moving 2 m/s in the +x-direction.  Assuming that the collision is elastic, calculate the final velocity of both masses  after the collision. Show that your results are consistent with conservation of  momentum and conservation of kinetic energy.).

Test Outline:

Materials allowed: One notecard, AP Physics 1 Formula sheet

Multiple Choice Questions (24 points, 8 questions)

  • Energy transformations and conservation (2Q)
  • Work-Energy theorem applications (2Q)
  • Linear momentum and collisions (2Q)
  • Elastic vs inelastic collisions (1Q)
  • Impulse and Force-Time graphs (1Q)

Free Response Questions (36 points)

  1. Energy Analysis (12 points)

    • Multiple energy transformations
    • Conservation of energy calculations
    • Analysis of energy losses

  2. 2D Collision Problem (12 points)

    • Free body diagrams
    • Conservation of momentum
    • Final velocities/directions
    • Elastic vs inelastic analysis

  3. Experimental Design (12 points)

    • Design experiment to measure spring constant OR coefficient of restitution
    • Include procedure, measurements, calculations

Key Study Areas:

  • Energy conservation and transformations
  • Work-Energy theorem
  • Linear momentum conservation
  • Elastic vs inelastic collisions
  • Impulse-momentum relationship
  • Force-Time graphs
  • Two-dimensional collisions

Remember: Draw diagrams, show work, include units.

Homework Total length ~ [120-170min]

STUDY!

Interactive Graph
Table Of Contents
Overview
Notes
Multiple Choice Questions (24 points, 8 questions)
Free Response Questions (36 points)